legs,

Set of 8 – Adjustable Heavy Duty 304 Stainless Steel Leveling Feet -Leg Levelers with 304 Stainless Steel T-nuts 5/16″ – 18 thread.
The furniture legs leveler are made of 304 Stainless Steel,and stainless steel doesn’t rust at all.And lock nuts included- An absolute must for the outside furniture or garage, especially if any heavy adjustable is involved.
Plenty Strong-Each leg leveler could hold 800 pounds ,working well solid and stable.A set of 8 total could hold 6400 pound.